Gear and Bearing Diagnostics Using Torque Oscillation Data

Back to all technologies
Download as PDF
65747
In the wind energy industry, gearbox failures are among the most costly and the most frequent, adding significantly to the operation and maintenance costs over the life cycle of the turbine. Despite significant improvements in the understanding of gear loads and dynamics, even to the point of establishing international standards for design and specifications of wind turbine gearboxes, these components generally fall short of reaching their 20-year design life. In a significant number of gearbox failures, the primary bearing on the low speed shaft experiences faults in its operation such as misalignment and movement on the mounts.

Researchers at Purdue University have developed a technique that allows for detection of gear and bearing faults using a torque transducer. Current technology uses accelerometers to measure translational vibrations in a system, a technique that is vulnerable to error from exterior vibrations. This technology uses a torque transducer to measure torsional vibrations, which are more directly related to the health of a system than translational vibrations that are more commonly used. This technology could be applied to any rotary mechanical system involving gears and/or bearings to detect and diagnose faults and more precisely perform preventative maintenance.

Advantages:
-More accurate measure of system health

Potential Applications:
-Detect and diagnosis faults in rotary mechanical systems
-Preventative maintenance for rotary mechanical systems
Apr 27, 2012
NATL-Patent
United States
(None)
(None)

Oct 7, 2011
Utility Patent
United States
(None)
(None)

Oct 7, 2011
PCT-Patent
WO
(None)
(None)

Oct 7, 2011
NATL-Patent
Canada
(None)
(None)

Oct 7, 2011
NATL-Patent
China
(None)
(None)

Oct 7, 2011
NATL-Patent
European Patent
(None)
(None)

Oct 7, 2011
NATL-Patent
Japan
(None)
(None)

Oct 8, 2010
Provisional-Patent
United States
(None)
(None)
Purdue Office of Technology Commercialization
1801 Newman Road
West Lafayette, IN 47906

Phone: (765) 588-3475
Fax: (765) 463-3486
Email: otcip@prf.org